Combined cupboard and dumb-waiter.



2 0. c. YETTER.

COMBINED CUPBOARD AND DUMB WAITER.

, APPLICATION FILED MAR. 30, 1911.

- Patente May 21, 1912.

iwi $142020 COLUMBIA PLANOIIRAPH 013.

UNITED STATES PATENT OFFICE.

CLYDE CHARLES YE TER, or BLOOMSBURG, PENNSYLVANIA.

COMBINED CUPBOARD AND DUMB-WAITER.

Specification of Letters Patent.

Patented May 21, 1912.

Application filed March 30, 1911. Serial No. 617,970.

To all whom 'it concern:

Be it known that I, CLYDE CHARLES YETTER, a citizen of the United States, residing at Bloomsburg, in the county of Columbia and State of Pennsylvania, have invented certain new and useful Improvements in Combined Cupboards and Dumb-Waiters; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the This invention relates to improvements in dumb waiters or elevators.

The object of the invention is to provide a simply constructed and eflicient device of this character which will normally stand at rest in the cellar of a house and which will not warp or become deflective in operation from exposure to dampness, and which is provided with peculiarly constructed looking and releasing means for retaining the cage in elevated or depressed positions.

With this and other objects in view the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings: Figure 1 represents a side elevation of a dumb waiter embodying this. invention and showing the cage or cabinet locked in projected or operative position by the improved locking means constituting a part of this invention; Fig. 2 is a horizontal section thereof, with the cage in lowered position, taken through the lock; Fig. 3 is a detail elevation of the lower part of the cage; Fig. 4 is a detail horizontal section; Fig. 5 is a detail vertical section taken on the line 5-5 of Fig. 3.

In the embodiment illustrated a floor 1 of the building is shown with a room space 2 above and a cellar or well space 3 below it and having an opening affording communication between the spaces 2 and 3. In the space 3 beneath the floor 1 and in line with the opening in the floor'is erected an elevator shaft frame 5, the upper end of which is provided with a platform 6 through which the cabinet or elevator cage 7 passes. This platform 6 is provided on its opposite sides with ball bearings as 8 which operate in vertically disposed run-ways or grooves formed in the oppositesides of the cupboard or cage 7 which 'will be hereinafter more fully described.

The shaft frame 5 embodies .in its construction upright posts orstandards as 10 composed of angle irons connected. at their ends and at intermediate points by metal cross bars as 11 and 11' respectively, and cross bars or braces 12 at the rear of the frame, preferablyarranged diagonally and the front of the frame being unobstructed for the greater portion of its length to per mit access to the cabinet when it is in lowered position.

Arranged on each sidejof the frame 5 and secured to the upper and lower cross bars thereof are two laterallyspaced upright rods as 13 and 14 which form weight guides and retaining members and are offset from said cross bars to space them a sufiicient distance from the bars to permit the weights 15 to slide freely thereon without danger ofengagement with the walls of the frame or the cage or cabinet. Pulleys as 16 are revolubly mounted on the cross bars near the upper end of the frame 5 above the guide rods 13 and 14 and in a plane midway between them and over which are designed to operate the weight cords or chains as 17 which are secured at one end to the weights 15 and at their other ends to the lower ends of the cage or cabinet 7.

Coiled springs 18 are secured at one end to the cross bars 11 at opposite sides of the frame 5 at points above the lower end of the frame and the other ends of these springs are secured to the opposite ends of a bar 19 which extends transversely across the frame below the vertically movable cage or cabinet and is designed to be engaged and depressed by said cage when it is in lowered position. This resiliently mounted member 19 serves as a buffer for the cage on its descent and to impart initial movement thereto on its ascent. J f

The weights 15 are provided on their inner faces with laterally extending eyes as 20 which slidably engage the rod 13 and 14 and hold the weights against lateral displacement. I

A spring projected bolt 21 extends transversely through one of the corner posts 10 and is designed toengage longitudinally spaced means on the cage to locksaid cage in raised or lowered position. This bolt is preferably mounted to slide longitudinally in a casing 22 secured to said post, said casing being provided with a longitudinal slot 7 23 through which a bolt actuating pin or finger 24: projects, said pin being secured to said bolt and extending at right angles therefrom. A wedge-shaped bolt-releasin member or head 25 is secured to one end of a rod 26 which is mounted to slide in vertically spaced brackets 27 and 28 secured to said bolt carried post and this member 25 operates between said pin 24: and post and when moved downwardly forces said pin outwardly which carries wit-h it the bolt 21, thereby disengaging said bolt from said cage. A coiled spring 29 is arranged on said rod 26 between the brackets 27 and 28, the upper end of said spring being engaged with a lateral projection 30 on the rod and is designed to hold the member 25 normally in retracted or inoperative position. This rod 26 extends upwardly through the floor 1 and is preferably provided with a head 31 which may be disposed in any convenient position for actuation to release the cage when it is desired to raise or lower it.

The cabinet or cage 7 may be of any suitable or desired construction and as shown comprises a closed cupboard 35 with an open screened compartment at its upper end and a skeleton compartment 36 at its lower end the latter being designed to receive an ice box (not shown). Longitudinally grooved strips 37 and 38 are secured to the opposite sides of the cage 7 and extend from end to end thereof, forming the runways for the ball bearings at the upper end of the frame 5. Fiber rollers as 39 are arranged at the corners of the cage 7 in position to engage the inner face of the angle iron posts 10 for guiding the cage in its vertical movements and preventing binding thereof against said posts. While in this embodiment of the invention the cage is shown applied to a two-story structure it is obvious that it may be applied to a building having any desired number of stories by providing the upper ends of the cage with rollers similar to the rollers 39 and extending the frame 5 upward.

The weights 15 may be of any suitable construction and are preferably made hollow to provide for the variation of the weight thereof to counterbalance the weight of the cage and its contents.

In the operation of this device, when the cage is in lowered inoperative position, the rod 26 is depressed which causes the wedgeshaped member 25 at the other end thereof to engage the pin 2/1 and thereby release the bolt 21 from engagement with the cage, said cage being provided near its upper end with a laterally projecting lug 41 with which the bolt 21 engages when the cage is in lowered position. l Vhen the bolt is disengaged from the lug 41 at the upper end of the cage the coiled springs 18 exert their tension to impart an initial upward movement to the cage and the weights 15 then move downwardly by gravity forcing the cage upwardly into the position shown in Fig. 1, whereby access may be had to the cupboard or cage from the room 2. When in the position shown in Fig. 1, the bolt 21 engages a similar lug 10 at the lower end of the cage and locks said cage in its upwardly projected operative position where it will remain until the rod 26 is again actuated to withdraw the bolt 21 from engagement with thelug 40 when the cage may be readily lowered by a slight downward pressure thereon.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined and claimed.

Having thus described my inventiomwhat I claim is:

1. The combination of an elevator shaft frame, a spring projected bolt operable transversely through said frame and having a pin extending laterally therefrom, a spring retracted wedge shaped member slidably mounted on said frame between it and said pin, and means for forcing said wedge shaped member into engagement with said pin to retract it, in combination with a vertically movable cage mounted in said frame and having means for engagement by said bolt.

2. The combination of an elevator shaft frame having a laterally extending casing opening through one wall thereof and pro vided with a longitudinal slot, a bolt mounted to slide in said casing and having a laterally projecting actuating pin operable in the slot of said casing, a spring retracted rod mounted to slide on said frame in a plane at right angles to the path of movement of said bolt and having a head adapt ed to pass between said frame and pin when the rod is moved in one direction, thereby withdrawing the bolt, in combination with a vertically movable cage mounted in said frame and having means for engagement by said bolt.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CLYDE CHARLES YETTER.

VVitnesse-s L. STRorIM, H. R. SrEEs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). 0. 

